Mixing-machine.



P. A. SIGKLESTBEL.

MIXING MACHINE.

nruouxon mum Jun: 1,1908.

907,297. Patented Dec.22,1908.

B SHEETS-SHEET 1.

INVENTOR l ATTORNEY F. A. SICKLESTEEL.

MIXING MACHINE.

APPLICATION rum) mm: 1, was.

907,297. Patented Dec. 22, 1908.

WITNESSES: INVENTOR a 47 BY ATTORNEY FRANK A. SICKLESTEEL, OF NORTHBRANCH, MICHIGAN.

MIXING-MACHINE.

Specification of Letters Patent.

Patented Dec. 22, 1908.

Application filed June 1, 1908. Serial No. 436,082.

To all whom it may concern:

Be it known that I, FRANK A. SICKLE- STEEL, a citizen of the UnitedStates, residing at North Branch, in the county of Lapeer and State ofMichigan, have invented cer tain new and useful Improvements inMixing-Machines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to mixing machines and more particularly to theclass of machines designed for mixing concrete and similar substances,the concrete being composed of any suitable binding agent and aggregatescommingled with or without water.

In the present instance, I have shown my invention as applied to amachine for mixing cement and sand or gravel to form concrete.

One object of my invention is to provide a mixer capable of imparting abetter grinding and mixing action to the material and in additionthereto obviate the sharp corners of a cubical mixer which fill withcement and must be cleaned out from time to time.

Another-object is to provide a mixer of the same capacity as mixers ofother designs, which will require less power to operate because the loadis nearer the axis of the re volving mixing rece tacle because thediameter of the mixer is ess than those of similar mixers of this class.

Still another object is the provision of a rigid mixing receptaclepossessing great strength thereby enabling me to manufacture mixers ofthe same size and capacity as those of other designs at less expense because the receptacles can be made of lighter material and yet afford thesame strength.

A further object is the provision of a mixing receptacle of such shapethat the material travels over long planes and in a staggeringdirection, that is from end to end of the receptacle, thereby thoroughlycommingling the cement and a gregates.

To these and ot ier ends therefore, my invention consists in certainnovel features and combinations such as will be more fully describedhereinafter and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view of themixing receptacle. Fig. 2 is a view in side elevation showing thecube-shaped drum rotatably mounted in a pivotally su I portedrectangular frame. Material is fe into one end of the rotatable drum,the rotation of which commingles the ingredients and after the materialis thoroughly mixed, the drum and its frame are tilted to discharge thematerial. The corners of the cube-shaped mixers collect and retain themixture which hardcns therein. As a result, the corners must be cleanedout from time to time. In order to avoid this disadvantage cuhiform orother rectangular drums have been devised wherein the corners have beencut off and plates substituted therefor. Others have attempted to avoidthe corners by constructing a poly onal shell or middle portion withpyramida end portions. This latter form, however will permit theconcrete to collect at the apices of the pyramids.

It is one object of my invention to provide a mixing receptacle of adifferent conformation from any of the above mentioned forms, whereinthe concrete is prevented from collecting at the meeting edges of thesides of the receptacle.

A further advantage is the provision of a device of this characterwherein the ingredients will be given a movement dilferent from thatimparted by the former mixers, in which the material is merely turnedover and over. In my invention the material is not only turned over andover but is also caused to slide back and forth from end to end of themixing receptacle.

Referring to the drawings, the mixing re ce tacle consists of anirregularly shaped po ygonal drum. The adjacent sides (1), (1), (2),(2), of the drum are longitudinally inclined or itched at op ositeangles to eac other, the p anes of whicli intersect, the sides being inshape similar to truncated trian les matched or arran ed oppositely toeach ot er so that the base 0 one triangu ar side lies adjacent thetruncated apex of the next triangular side. The ends of the drum aresubstantially pyramidal in sha e and consist of alternate wide andnarrow aces (3) and (4) respectively. The wide faces (3) are formed bysubstantially triangular extensions of the bases of the triangularsides, of which extensions are connected by means of rectangular faces(4) constituting extensions of the truncated ends of the side faces. Theapex of one pyramidal end. is cut away to form a mouth or opening toreceive the ingredients to be mixed, the apex of the opposite end beingsimilarly cut away to form a discharge for the mixed material. Thereceiving mouth is preferably larger than the discharge mouth.

Annular bearings (5) and (6) are located near the receiving anddischarge mouths of the drum respectively, which bearings rest onanti-friction rolls (7), (7), carried by a rectangular frame (8)surrounding the drum. This frame is pivotally sup )orted interme diateits ends in the standards (9), (9) to permit the drum to be tilted whenit is desired to discharge the contents thereof. A ring gear (10)encircles and is secured to the drum, such gear meshing with a spur (11)driven in any suitable manner. This gearing operates to rotate the drumon its longitudinal axis.

The ingredients are fed into the receiving end of the drum which isrotated by means of the gearing to bring the material into contact withthe successive sides (1), (1), (23), (2), of the drum. Assumin the drumtobe stationary, the material wili lie in a pocket formed by the angleof a rectangular face 1) the two adjoining triangular faces (3), (3) ofone pyramidal end and three of the truncated triangular sides (1), (2),(1) of the drum at the receiving end of the mixer. A partial rotation ofthe drum will spread the material on the adjoining side (1) of the drumand owing to the incline of such face, the material will be shunted tothe opposite end of the drum where it is gathered in a pocket formed bythe pyramidal faces and the sides similar to that above described.Another partial rotation will spread the material on one of the sides(2) and shunt it back to the receiving end of the mixer and so on,thoroughly commingling the ingredients. The cause of this alternateshunting of the material from end to end of the drum resides in the factthat the angles (12), (12) formed by the truncated ends of thetriangular sides (1), (1), and the rectangular faces 1), (4), are lowerthan the angles (13) (13) formed by the adjacent sides (2), (2), and thetriangular faces (3), (3), the angles (12), (12), being arrangedalternately with the angles (13), (13) and at opposite ends of the drum.

Another point of View of the illustrated construction embodying one formof my invention is that of a polygonal drum, the sides of which are eachcomposed of a body portion having a truncated triangular shape, suchside being provided at its truncated end with a rectangular extensionand at its 0pposite end (the base line of the truncated triangular bodyportion) with a substanthe side edge 3 tially triangular extension, thebody portion and the rectangular and triangular extensions all beingarranged at different angles relative to each other and to thelongitudinal axis of the drum, the angle of the meeting edges of thetriangular extension and body portion being greater than the angle ofthe meeting edges of the rectangular extension and the truncated end ofthe body portion, such sides being arranged oppositely or matchedrelative to each other, as well as being oppositely inclined relative tothe longitudinal axis of the drum.

The sharper angles or pockets of the rcceptacle are located at oppositeends of the successive sides alternately so that as the drum rotates,the material is shunted back and forth longitudinally of the drum beingalternately spread on the body portion of the sides and shunted to thelower ends or pockets thereof where it is gathered and subsequentlyspread on the adjacent side as the drum rotates.

The drum may be made as strong as the mixers now in use and yet lighterbecause of the brace or reinforcement afforded at the juncture of thesides with each other. The sides are riveted together which increasesthe strength of the drum and reduces the cost of material because alighter sheet metal can 2'? be employed.

The pockets formed at the truncated ends of the sides owing to the angleof inclination of the sides relative to the rectangular extensions arecomparatively shallow and broad and the load is maintained nearer theaxis of rotation of the drum. Hence less power is required to rotate thedrum.

Having thus fully disclosed my invention what I claim as new is 1. Thecombination in a mixing machine, of a polygonal receptacle havingsubstantially fiat sides formed of truncated triangular plates arrangedso that the narrow end of one plate lies between the wider ends of thetwo adjacent plates and is inclined oppositely to the inclination ofsuch two adjacent plates, and converging ends, the respective endshaving receiving and discharge openings therein.

2. A mixing machine comprising a mixing receptacle supported to rotateupon a tiltin axis, the receptacle consisting of a polygona drum, thebody portion of which is composed of a series of truncated triangularsides, the base of the one side lying adjacent to and in substantiallythe same vertical plane with the truncated a ex of the next adjacentside, the sides eing arranged around the longitudinal axis of the drumand oppositely inclined from end to end relative to each other, the endssecured to the end edges of the body portion and bein substantiallypyramidal in shape so that s allow pockets are formed at the alternateends of ill the successive sides, the yramidal ends'provided withreceiving and discharge openlngs respectively.

3. A mixing machine comprising a mixing receptacle supported to rotateupon a tilting axis, the receptacle consisting of a polygonal drumcomposed of a series of truncated triangular sides, the base of one sidelying adjacent the truncated apex of the adjacent side, the adjacentsides being oppositely inclined relative to the longitudinal axis 01 thedrum, rectangular extensions projecting from the truncated ends of thesldes, triangular extensions projecting from the opposite ends of thesides, the side edges oi the rectangular extensions being connected tothe side edges of the adjacent triangular extensions to formsubstantially pyramidal ends for thedrum such ends terminating in thereceiving and discharge openings respectively, the angle of inclinationof the sides relative to the trianular extensions being greater than theangle of inclination of the sides relative to the rectangular extensionsto form pockets at the truncated ends of the sides.

4. The combination in a mixing machine, oi a polygonal receptacle havingconverging ends, the ends each provided with an opening, the portionbetween the ends comprising a plurality of substantially plane facesextending between the ends and arranged about the axis of thereceptacle, the adjacent plane laces being oppositely inclined relativeto each other to leave an unobstructed interior. 5. The combination in amixing machine, of a receptacle having outwardly converging ends, theends each provided with an opening, the body portion between the endscomprising a plurality of substantially fiat sections extending betweenand connected to the ends, the sections arranged about the axis of thereceptacle and belng alternatel oppositely inclined with respect to eachother, the meeting edges of the sections being substantially flush toform unobstructed shallow pockets at angles greater than a right angle.

6. The combination in a mixing machine, of a rece tacle havingconverging ends, the ends eac 1 provided with an opening, and a bodyportion comprising a plurality of substantially fiat sections, arrangedat angles greater than right angles relative to each other around theaxis of the rece tacle to form an unobstructed interior and being alternately oppositely inclined from end to end, the sections each beingin shape like a truncated triangle and arranged in reverse order.

7. The combination in a mixing machine, of a rece tacle having truncatedpyramidal ends, eac 1 provided with an opening, and a body portioncomprising a plurality of substantially flat sections oppositelyinclined relative to each other from end to end and arranged about theaxis of the receptacle, the side edges of the sections meeting eachother and secured together at oblique an les to form an unobstructedinterior, the en edges of the sections merging into the yramidal ends atobli ue angles to form sha low unobstructed poc ets.

8. The combination in a mixin machine, of a receptacle consisting of a purality of: substantially flat sections constituting the body portion,the sections arranged around the axis of the receptacle in reverse orderand being oppositely inclined relative to each other, the op osite endsof the sections being extended an bent at angles less than right anglesto form polygonal converging ends having openings therein, the endscomposed of alternate wide and narrow sides, the angles at the juncturesof the sections with the end forming extensions constitutin shallowpockets arranged in staggered re ation to eacji other around theinterior of the receptac e.

In testimony whereof, I have affixed my signature in presence of twowitnesses.

FRANK A. SIOKLESTEEL.

Witnesses:

WM. Manon, MARY E. LANGDON.

